Results 51 to 60 of about 161,416 (264)

Kendall’s tau and agglomerative clustering for structure determination of hierarchical Archimedean copulas

open access: yesDependence Modeling, 2017
Several successful approaches to structure determination of hierarchical Archimedean copulas (HACs) proposed in the literature rely on agglomerative clustering and Kendall’s correlation coefficient.
Górecki J., Hofert M., Holeňa M.
doaj   +1 more source

Plug-in Estimation of Dependence Characteristics of Archimedean Copula via Bézier Curve

open access: yesRevstat Statistical Journal, 2023
This article introduces measurement of the dependence between variables with a dependence structure defined by Archimedean copulas. The estimation of the dependence measure, such as Kendall’s tau as well as the lower and upper tail dependence, is ...
Selim Orhun Susam   +1 more
doaj   +1 more source

The Herfindahl neutral point: A firm‐level threshold for managing market concentration with evidence from US hog packing

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract This paper derives a firm‐level threshold, the Herfindahl Neutral Point, from the standard concentration index used in merger review. At this threshold, a marginal expansion leaves the index unchanged. Firms below the threshold reduce concentration when they expand; firms above it increase concentration.
Andrew J. Keller, Krishna P. Paudel
wiley   +1 more source

Statistical analysis of dependent competing risks model in constant stress accelerated life testing with progressive censoring based on copula function

open access: yesStatistical Theory and Related Fields, 2018
In this paper, we consider the statistical analysis for the dependent competing risks model in the constant stress accelerated life testing with Type-II progressive censoring. It is focused on two competing risks from Lomax distribution.
Xuchao Bai   +3 more
doaj   +1 more source

The result of Kendall’s tau and Blomqvist’s beta coefficients of bivariate copula for EBOV and COVID-19 periods.

open access: yes, 2021
The result of Kendall’s tau and Blomqvist’s beta coefficients of bivariate copula for EBOV and COVID-19 periods.
Mahdi Ghaemi Asl (10905817)   +2 more
core   +1 more source

Born this way: Does variation in perinatal limb bone morphology predict adult locomotor repertoire in primates?

open access: yesThe Anatomical Record, EarlyView.
Abstract Primates show a high degree of locomotor diversity that engenders similar variance in limb bone cross‐sectional geometry and bending strength: leaping primates have stronger hindlimb bones whereas suspensory species have stronger forelimb bones.
Angela M. Mossor   +7 more
wiley   +1 more source

Kendall’s Tau between network properties and club functionalities in different league categories.

open access: yes, 2016
Kendall’s Tau between network properties and club functionalities in different league categories.
Xiao Fan Liu (341941)   +4 more
core   +1 more source

Cerebrospinal Fluid Tau, p-Tau 181 and Amyloid-beta(38/40/42) in Frontotemporal Dementias and Primary Progressive Aphasias [PDF]

open access: yes, 2010
Background/Aims: We determined cerebrospinal fluid (CSF) concentrations of amyloid-beta(A beta)(1-38), A beta(1-40), A beta(1-42), total tau and phospho-tau (p-tau) in order to study their differential expression in frontotemporal dementia (FTD, n = 25 ...
Hermann Esselmann   +27 more
core   +1 more source

Bayesian Kendall’s tau correlation between event ratings and degree to which these were based on personal experience.

open access: yes, 2023
Bayesian Kendall’s tau correlation between event ratings and degree to which these were based on personal experience.
Alejandra Sel (175535)   +3 more
core   +1 more source

The impact of COVID‐19 pre‐university education on first‐grade medical students. A performance study of students of a Department of Histology

open access: yesAnatomical Sciences Education, Volume 18, Issue 3, Page 254-263, March 2025.
Abstract The recent coronavirus disease (COVID‐19) forced pre‐university professionals to modify the educational system. This work aimed to determine the effects of pandemic situation on students' access to medical studies by comparing the performance of medical students.
José Manuel García   +9 more
wiley   +1 more source

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